492 search results - page 74 / 99 » Computing aggregations in database query languages |
ICPPW
1999
IEEE
14 years 2 months ago
1999
IEEE
Location management is an essential service in mobile networks. It provides mechanisms for recording and querying location of mobile units in the network. This is needed for estab...
SIGMOD
2009
ACM
14 years 10 months ago
2009
ACM
We present a complete XPath cost-based optimization and execution framework and demonstrate its effectiveness and efficiency for a variety of queries and datasets. The framework i...
ICDE
2007
IEEE
14 years 4 months ago
2007
IEEE
We consider the problem of semantic load shedding for continuous queries containing window joins on multiple data streams and propose a robust approach that is effective with the ...
HPDC
2010
IEEE
13 years 11 months ago
2010
IEEE
In this paper we present the Brown Dwarf, a distributed system designed to efficiently store, query and update multidimensional data over an unstructured Peer-to-Peer overlay, wit...
BIODATAMINING
2008
13 years 10 months ago
2008
Background: In computer science, database systems are based on the relational model founded by Edgar Codd in 1970. On the other hand, in the area of biology the word 'databas...